KR960039722A - Wireless communication subscriber unit - Google Patents

Wireless communication subscriber unit Download PDF

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Publication number
KR960039722A
KR960039722A KR1019960011706A KR19960011706A KR960039722A KR 960039722 A KR960039722 A KR 960039722A KR 1019960011706 A KR1019960011706 A KR 1019960011706A KR 19960011706 A KR19960011706 A KR 19960011706A KR 960039722 A KR960039722 A KR 960039722A
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KR
South Korea
Prior art keywords
cell
controller
target cells
subscriber unit
signal strength
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KR1019960011706A
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Korean (ko)
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KR100395381B1 (en
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리챠드 테일로 다니엘
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빈센트 비. 인그라시아
모토로라 인코포레이티드
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Publication of KR960039722A publication Critical patent/KR960039722A/en
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Publication of KR100395381B1 publication Critical patent/KR100395381B1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
    • H04B7/18539—Arrangements for managing radio, resources, i.e. for establishing or releasing a connection
    • H04B7/18541—Arrangements for managing radio, resources, i.e. for establishing or releasing a connection for handover of resources
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0061—Transmission or use of information for re-establishing the radio link of neighbour cell information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/06—Airborne or Satellite Networks

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Relay Systems (AREA)
  • Telephonic Communication Services (AREA)

Abstract

셀룰라 통신망(10)은 지구 궤도를 도는 위성(12)내에 위치한 기지국을 포함하며 임의의 갯수의 가입자 유닛(26)을 포함한다. 각 위성(12)은 상기 위성(12)이 소정 기간 동안 지구를 향해 투사한 셀(28)에 대한 유효한 셀 클러스터목록(54)을 수신한다. 각 셀 클러스터 목록(54)은 로컬셀(28)내에서 동작하는 가입자 유닛(26)이 핸드오프를 요청할 수도 있는 셀(28)을 식별하는 타겟 셀 엔트리(60)를 포함한다. 상기 엔트리(60)는 상기 타겟 셀과 연관되는 통신 채널을 식별한다. 다가올 통신 채널 변화는 동일한 셀(28)에 대한 별도의 엔트리(26)에 의해 표시된다. 가입자 유닛(26)은 상기 목록(54)을 수신하고, 핸드오프 결정을 하기 위해 로컬 셀 및 타겟셀을 위한 통신 채널들을 평가한다.The cellular network 10 includes any number of subscriber units 26 including base stations located within satellites 12 that orbit the Earth. Each satellite 12 receives a valid cell cluster list 54 for a cell 28 that the satellite 12 has projected toward the earth for a predetermined period of time. Each cell cluster list 54 includes a target cell entry 60 that identifies a cell 28 in which the subscriber unit 26 operating within the local cell 28 may request a handoff. The entry 60 identifies the communication channel associated with the target cell. The upcoming communication channel change is indicated by a separate entry 26 for the same cell 28. Subscriber unit 26 receives the list 54 and evaluates communication channels for local and target cells to make handoff decisions.

Description

무선 통신 가입자 유닛Wireless communication subscriber unit

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.

제1도는 셀룰라 통신 시스템이 구현될 수 있는 한 환경에 대한 블럭도, 제2도는 위성내에 위치한 수개의 기지국으로부터 지표면을 향해 투사된 셀들의 겹쳐지는 패턴에 대한 개략도, 제3도는 지상 제어국(GCS)에 의해 수행되는 지상 제어국 프로세스의 흐름도, 제4도는 임의의 갯수의 셀 클러스터 목록을 포함하도록 구성된 테이블의 블럭도, 제5도는 위성내에 위치한 기지국의 블럭도, 제6도는 위성내에 우치한 기지국에 의해 수행되는 위성 출력 프로세스의 흐름도, 제7도는 소스 노드 및 목적 노드 사이에서 전달하는 데이타를 구성하는 데에 셀룰라 통신 시스템이 사용할 수 있는 본보기적 패킷의 데이타 포캣도, 제8도는 가입자 유닛(SU)의 블럭도, 제9도는 가입자 유닛 수신 호 패킷 프로세스의 흐름도, 제10도는 가입자 유닛의 메모리내에 유지되는 본보기적 셀 클러스터 목록의 블럭도, 제11도는 제1가입자 유닛 백그라운드 프로세스의 흐름도, 제12도는 제2가입자 유닛 백그라운드 프로세스의 흐름도.Figure 1 is a block diagram of the environment as far as the cellular communication system can be implemented, Figure 2 is a schematic diagram of overlapping patterns of cells projected from several base stations located in the satellite towards the surface, Figure 4 is a block diagram of a table configured to include an arbitrary number of cell cluster lists; Figure 5 is a block diagram of a base station located within a satellite; Figure 6 is a block diagram of a base station located within a satellite; 7 shows a data packet of an exemplary packet that the cellular communication system can use to construct the data conveyed between the source node and the destination node, Figure 8 is a flow chart of the satellite output process carried out by the subscriber unit (SU Figure 9 is a flow diagram of a subscriber unit received call packet process, Figure 10 is a block diagram of a subscriber unit received call packet process, Blocks of ever-cell cluster list also, the first subscriber unit 11 to turn a flow chart of a background process, 12 to turn the second flow diagram of a subscriber unit a background process.

Claims (5)

셀들 간에 호(call)가 핸드오프되는 셀룰라 통신 시스템(10)내에서 사용하기 위한 무선 통신 가입자 유닛(26)으로서, 후보 타겟 셀의 목록을 수신하고 저장하기 위한 메모리(126)와, 하나 또는 그 이상의 상기 타겟 셀들을 향해 투사된 신호를 감시하기 위한 수신기(118, 120)와, 상기 메모리 및 상기 수신기에 연결되며, 상기 타겟 셀들 중 상기 호가 핸드오프될 바람직한 한 셀을 선택하도록 구성된 제어기(124)와, 상기 제어기에 연결되며, 상기 선택된 타겟 셀로의 핸드오프를 요청하는 요청 메세지를 송신하는 송신기(116)를 포함하는 것을 특징으로 하는 무선 통신 가입자 유닛.A wireless communication subscriber unit (26) for use in a cellular communication system (10) in which a call is handed off between cells, comprising: a memory (126) for receiving and storing a list of candidate target cells; A controller (124) coupled to the memory and the receiver, the controller configured to select one of the target cells from which the call is to be handed off; a controller (124) configured to monitor a signal projected toward the target cells; And a transmitter (116), coupled to the controller, for transmitting a request message requesting handoff to the selected target cell. 제1항에 있어서, 후보 타겟 셀들의 상기 목목은 상기 타겟셀들중 하나와 연관된 제1 및 제2무선 주파수 통신 채널을 식별하는 데이타를 포함하며, 상기 제어기는 또한 상기 제1 및 제2무선 주파수 통신 채널을 식별하는 상기 데이타와 연관되도록 구성되는 것을 특징으로 하는 무선 통신 가입자 유닛.2. The method of claim 1 wherein the wood of the candidate target cells comprises data identifying first and second radio frequency communication channels associated with one of the target cells, And is configured to be associated with the data identifying the communication channel. 제1항에 있어서, 상기 후보 타겟 셀 목목은 상기 타겟 셀들중 하나와 연관된 제1 및 제2무선 주파수 통신채널을 식별하는 데이타를 포함하고, 상기 제어기는 또한 상기 제1 및 제2통신 채널에서 수신된 신호에 응답하여 상기 하나의 타겟 셀을 위한 평균 신호 세기를 결정하도록 구성되는 것을 특징으로 하는 무선 통신 가입자 유닛.2. The method of claim 1 wherein the candidate target cell neck includes data identifying first and second radio frequency communication channels associated with one of the target cells, And determine an average signal strength for the one target cell in response to the received signal. 제3항에 있어서, 상기 제어기는 또한 상기 제1 및 제2통신 채널에서 수신된 상기 신호를 각각 특징짓는 제1 및 제2순시 신호 세기를 결정하고, 상기 제1 및 제2순시 신호 세기중 큰 것을 식별하고, 상기 제1 및 제2신호 세기중 상기 큰 신호 세기에 응답하여 상기 평균 신호 세기를 결정하도록 구성되는 것을 특징으로 하는 무선 통신 가입자 유닛.4. The apparatus of claim 3, wherein the controller is further configured to determine first and second instantaneous signal strengths, respectively, that characterize the signals received on the first and second communication channels, And to determine the average signal strength in response to the large signal strength of the first and second signal strengths. 제3항에 있어서, 상기 제어기는 또한 상기 가입자 유닛이 위치하는 로컬셀을 향해 투사된 통신 채널내에서 수신된 신호에 대한 평균 신호 세기를 결정하고, 상기 한 타겟 셀을 위한 상기 평균 신호 세기를 상기 로컬셀을 위한 평균 신호 세기와 비교하도록 구성되는 것을 특징으로 하는 무선 통신 가입자 유닛.4. The method of claim 3, wherein the controller is further configured to determine an average signal strength for a signal received in a communication channel projected toward a local cell in which the subscriber unit is located, And compare the average signal strength for the local cell with the average signal strength for the local cell. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임※ Note: It is disclosed by the contents of the first application.
KR1019960011706A 1995-04-28 1996-04-18 Method for operating a subscriber unit in a cellular communication system KR100395381B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US431005 1995-04-28
US431,005 1995-04-28
US08/431,005 US5649291A (en) 1995-04-28 1995-04-28 Communication system and method using subscriber units to evaluate hand-off candidates

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Publication Number Publication Date
KR960039722A true KR960039722A (en) 1996-11-25
KR100395381B1 KR100395381B1 (en) 2003-11-20

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US (1) US5649291A (en)
JP (2) JPH0923466A (en)
KR (1) KR100395381B1 (en)
CN (1) CN1086264C (en)
IT (1) IT1285181B1 (en)

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Also Published As

Publication number Publication date
IT1285181B1 (en) 1998-06-03
ITRM960244A0 (en) 1996-04-17
US5649291A (en) 1997-07-15
KR100395381B1 (en) 2003-11-20
CN1086264C (en) 2002-06-12
CN1138810A (en) 1996-12-25
JP2007060719A (en) 2007-03-08
JPH0923466A (en) 1997-01-21
ITRM960244A1 (en) 1997-10-17

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